The highly irregular galaxy ESO 174-1, which resembles a lonely, hazy cloud against a backdrop of bright stars, dominates this image from the NASA/ESA Hubble Space Telescope. via NASA https://ift.tt/sDGTu20
Are asteroids dangerous? Some are, but the likelihood of a dangerous asteroid striking the Earth during any given year is low. Because some past mass extinction events have been linked to asteroid impacts, however, humanity has made it a priority to find and catalog those asteroids that may one day affect life on Earth. Pictured […]
Teams install the heat shield on the Artemis II Orion spacecraft at NASA’s Kennedy Space Center in Florida on June 22, 2023. via NASA https://ift.tt/CLVhEep
Monitoring 68 pulsars with very large radio telescopes, the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has uncovered evidence for the gravitational wave (GW) background by carefully measuring slight shifts in the arrival times of pulses. These shifts are correlated between different pulsars in a way that indicates that they are caused by GWs. […]
Students from 20 middle and high schools watched as their experiments launched aboard a high-altitude balloon on June 14 as part of NASA’s TechRise Student Challenge. via NASA https://ift.tt/yQUrWbL
Unlike most entries in Charles Messier’s famous catalog of deep sky objects, M24 is not a bright galaxy, star cluster, or nebula. It’s a gap in nearby, obscuring interstellar dust clouds that allows a view of the distant stars in the Sagittarius spiral arm of our Milky Way galaxy. Direct your gaze through this gap […]
A young alligator rests on a concrete structure at NASA’s Kennedy Space Center in Florida on April 25, 2023. via NASA https://ift.tt/pLsW8xw
These two global views of Mars were captured at ultraviolet wavelengths, beyond the spectrum visible to human eyes. Recorded by the MAVEN spacecraft’s Imaging Ultraviolet Spectrograph instrument in July 2022 (left) and January 2023, three otherwise invisible ultraviolet bands are mapped into red, green, and blue colors. That color scheme presents the Red Planet’s surface […]
Local students take in the sights—and data—at an Earth Information Center student engagement event, Friday, June 23, 2023, at NASA Headquarters in Washington. via NASA https://ift.tt/aJEqRPl
You’ve surely seen it, but you might not have noticed it. During a cloudless twilight, just before sunrise or after sunset, part of the atmosphere above the horizon appears slightly dark and off-color. Called the Belt of Venus, this transitional band between the dark eclipsed sky and the bright day sky can be seen most […]